index.ts

/**
 * Concat two things
 * @param a a thing
 * @param b another thing
 * @public
 */
export function add(a: number, b: number): number;
export function add(a: string, b: string): string;
export function add(a: number | string, b: number | string): number | string {
  if (typeof a === "number" && typeof b === "number") {
    return a + b;
  } else {
    return "" + a + b;
  }
}

export const SECRET_STRING = "shhhhh!";

export { default as Car } from "./car";
export { Unicycle, Bike } from "./cycles";